diff --git a/tox.ini b/tox.ini
index 3b55867f..daaf4130 100644
--- a/tox.ini
+++ b/tox.ini
@@ -1,6 +1,6 @@
 [tox]
 skip_missing_interpreters = True
-envlist = py26,py27,py32,py33,py34,py35,py36,py37
+envlist = py26,py27,py32,py33,py34,py35,py36,py37,jython,pypy
 skipsdist = True
 
 [testenv]